C. Kudsia, J. Dorey, J. Heierli, K. R. Ainsworth, G. Lo
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A New Type of Low Loss l4 GHz High Power Combining Network for Satellite Earth Terminals
A High Power Combiner is described which provides equivalent performance at l4 GHz to that which is currently available at 6 GHz. This represents an advance in technology which is achieved through the use of: a) TEl13 Dual-Mode Elliptic Function Invar Filters exhibiting Q's in excess of ll,000, b) Precision hybrid power splitters with a balance of 3 dB±.075 dB over the l4.0-l4.5 GHz band, and c) A Thermal Design Configuration which ensures a temperature rise of not more than 30°C at maximum rated power. These Combiners are rated at l.2 kW in transmission and 3.6 kW in reflection. Using these units as building blocks, up to 6 High Power Amplifiers can be combined into a single antenna feeder input. Measured data is presented at power levels of up to l.7 kW.
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